Science Magazine Podcast Tropical birds’ ‘silent spring,’ and mapping people’s brains during surgery
Feb 26, 2026
Warren Cornwall, an environmental reporter who witnessed shrinking bird populations in Brazil, and Raouf Belkhir, an M.D.-Ph.D. student researching awake brain mapping. They discuss quieting tropical forests and which birds are most affected. They also cover refined awake stimulation techniques that track timing effects to better map speech processing during surgery.
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Field Scientists Say Night Skies No Longer Swarm With Insects
- Long-term insect collectors reported dramatic drops: lights no longer attract swarms at night.
- Warren Cornwall recounts field scientists' anecdotes that nights once full of insects now yield almost none.
Bird Loss Can Ripple Into Forest Collapse
- Bird declines can cascade to ecosystem-level effects like reduced seed dispersal and altered forest composition.
- Cornwall cites Guam's snake invasion as an example where bird loss degraded forest regeneration through lost seed distribution.
How Field Teams Measure Bird Health In The Jungle
- Researchers use mist nets, metal leg bands, blood markers for fat and ketones, and feather checks to track bird condition year-to-year.
- Cornwall describes catching birds, weighing them in vials, and testing fat and ketones on-site to assess nutrition.